Visara CNA-8000 Planning Guide - Manual (Page 31)

CNA-8000 Migration and Planning Guide
707156-002 3-5
DLSw Circuit Establishment
Let us start with the assumption that the XCA VTAM definition used by the CNA-8000
for use with the DLSw circuits has been activated, and that the PU2 platform is
communicating with the local DLSw router. This is a prerequisite for establishing a
DLSw circuit. Use the diagram illustrated below as a guide for the data flow diagram.
VTAM CNA-8000
DLSw Router PU
IP connection initiated by either side
--------------------------------------------------
Test Can You Reach (exploratory)? Test
<---------------------
----------------------------------------------------- --------------
+ Test Rsp I Can Reach (exploratory) + Test Rsp
-------------------- ----------------------------------------------------- --------------
Can You Reach (Circuit Start)
Null XID
---------------------------------------------------- -------------
I Can Reach (Circuit Start)
-----------------------------------------------------
Reach
Ack
-----------------------------------------------------
Null XID XID Frame
------------------- -----------------------------------------------------
XID XID Frame XID
------------------- ----------------------------------------------------- --------------
XIDs XIDs XIDs
---------------- -------------------------------------------------- -----------
XID Recognized
SABME
CONTACT SABME
------------------- ----------------------------------------------------- --------------
UA
CONTACTED UA
------------------ ---------------------------------------------------- -------------
SNA Activation IFRAMES SNA Activation
------------------- ----------------------------------------------------- -----------------
IP IP
Router
CNA-8000
IP
IP
SNA PU2
LLC
ESCON
VTAM
Switched
Node
Definitions